Package check result: ERROR

Check: tests, Result: ERROR
    Running ‘testthat.R’ [34s/37s]
  Running the tests in ‘tests/testthat.R’ failed.
  Complete output:
    > 
    > 
    > library(testthat)
    > library(loon)
    Loading required package: tcltk
    loon Version 1.4.2.
    To learn more about loon, see l_web().
    > 
    > test_check("loon")
    
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    [ FAIL 1 | WARN 0 | SKIP 0 | PASS 316 ]
    
    ══ Failed tests ════════════════════════════════════════════════════════════════
    ── Error ('test_loonGrob.R:135:5'): plots with different glyphs have correct structure ──
    <packageNotFoundError/error/condition>
    Error in `find.package(package, lib.loc, verbose = verbose)`: there is no package called 'loon.data'
    Backtrace:
        ▆
     1. └─utils::data(faces, package = "loon.data") at test_loonGrob.R:135:5
     2.   └─base::find.package(package, lib.loc, verbose = verbose)
    
    [ FAIL 1 | WARN 0 | SKIP 0 | PASS 316 ]
    Error: Test failures
    Execution halted

Check: re-building of vignette outputs, Result: NOTE
  Note: skipping ‘introduction.Rmd’ due to unavailable dependencies: 'maps'
  Note: skipping ‘savingLoonPlots.Rmd’ due to unavailable dependencies: 'png'